[mapserver-users] java mapplet tooltips -- question

[Stephen Lime]

1) I didn't take the time to write a DTD. The aelfred parser, in order to keep size down, is
not a validating parser anyway. That means the applet really needs to be paired with a 
trusted script.

2) Not much. Just need to go through it and do some cross checking. I believe the verbose
reporting capability is not there yet.

Steve

Stephen Lime
Internet Applications Analyst

Minnesota DNR
500 Lafayette Road
St. Paul, MN 55155
651-297-2937

>>> "Robert Chavez" <rchavez at perseus.tufts.edu> 06/08/01 07:42AM >>>
Thanks Steve, this looks very promising.

Two questions.

1. Assuming the XML file gets created in a script that one writes using
mapscript, will this XML mapplet use well formed XML or is there a specific
DTD it expects.

2. What would it take to bring this in sync with the canonical mapplet (I
haven't had a chance to look at the XML mapplet code yet?

Thanks
Rob Chavez

***********************************************
Robert Chavez
Programmer, GIS Specialist
Perseus Project
Tufts University
Department of Classics
124 Eaton Hall
Medford, MA 02155

Tel:  617-627-3830
Fax:  617-627-3032
Email:  rchavez at perseus.tufts.edu 
Web:  www.perseus.tufts.edu 



----- Original Message -----
From: "Stephen Lime" <steve.lime at dnr.state.mn.us>
To: <rchavez at perseus.tufts.edu>
Cc: <mapserver-users at lists.gis.umn.edu>
Sent: Friday, June 01, 2001 11:34 AM
Subject: Re: [mapserver-users] java mapplet tooltips -- question


> I've played with this in the past a little bit. My idea was to export
addtribute data along with a transformed coordinate information as an XML
file that the applet could use for mouse over display. Sort of a geographic
image map. A version of the mapplet is available to do this although it
needs to be brought in sync with the main version. You can download it at:
>
>   http://maps.dnr.state.mn.us/java/mapplet_xml 
>
> There are a couple of examples on the DNR site that use it or variations.
>
>   http://www.dnr.state.mn.us/cgi-bin/mapdoqs.pl 
>
> Is a MapScript app to browse DOQs for the state of MN. If you zoom in
you'll also see red dots that represent GNIS points. Move the mouse over
them and you'll get a few attributes in a popup window.
>
>   http://www.dnr.state.mn.us/weather/map.html 
>
> Uses the base code and adds support for a second XML file, one for cities
and another for counties. Same idea though.
>
> Note that the applet requires the Aelfred XML parser. It's super light and
well suited for applets. I'd like to be able to control the presentation
within the popup window more but with Java 1.2 that's difficult. I imagine
templates could be used here to create some really nice effects.
>
> Anyway, one idea...
>
> Steve
>
> Stephen Lime
> Internet Applications Analyst
>
> Minnesota DNR
> 500 Lafayette Road
> St. Paul, MN 55155
> 651-297-2937
> >>> "Robert Chavez" <rchavez at perseus.tufts.edu> 06/01/01 09:07 AM >>>
> Greetings,
>
> I'm trying to add some functionality to Steve's mapplet and I'm wondering
if
> anyone has some advice.
>
> What I want to do is add a little java method and javascript so that when
a
> user mouses over a feature in a plotted layer, information about that
> feature appears in a popup tooltip layer.  Kind of an alternate way of
> displaying label information.
>
> Some of the tooltip info will come directly from the Shapefile, other info
> will come from a PostGres database.  I don't have a problem getting the
> tooltip info out of the shapefiles and database and processing it.  Since
> I'm using mapscript I can pull that information out of the appropriate
place
> and embed it in the output HTML in <div> tags that a JavaScript can pick
up
> and display..
>
> The problem for me is how to get the applet and JavaScript communicating
> properly.  I'm having some trouble figuring out how to get a mouseover on
a
> feature in the applet map to tip off the JavaScript to display the
tooltip.
>
> Any advice/suggestions would be greatly appreciated.
> Thanks,
> Rob
>